Tubing for conveying freshly mixed concrete



Sept. 29, 1964 F. lvANYl TUBING Foa CONVEYING FRESHLY MIXED CONCRETE Filed Dec. 19, 1962 2 Sheets-Sheet 1 INVENTOR.

lVANYl FERENC ATMP/vir Sept. 29, 1964 F. lvANYl 3,150,753

TUBING FOR CONVEYING FRESHLY MIXED CONCRETE Filed Dec. 19, 1952 2 Sheets-Sheet 2 INVENTOR FERENC IVANYI .BYW Z United States Patent O 3,150,753 TUBING FOR CONVEYING FRESHLY MIXED CONCRETE Ferenc Ivanyi, 309 E. 75th St., New York, N.Y. Filed Dec. 19, 1962, Ser. No. 245,756 2 Claims. l(Cl. 193 25) This invention concerns a llexible conduit, tubing or hose for conveying or transferring freshly mixed concrete, cement and the like.

Heretofore it has been conventional in constructing buildings for concrete to be conveyed from a supply thereof to the position where the concrete is to be poured into a column, by a crane carrying a loaded hopper or by men pushing wheelbarrows or by a combination of both. When columns and iloor slabs are to be set in upper lloors of a building it is very diiiicult to convey the concrete directly from the loaded hopper of the crane to the precise position where the freshly mixed concrete is to be poured. The pouring positions may not be provided with runways or suflicient scaffolding to permit wheelbarrows to be wheeled up to the pouring positions. Where wheelbarrows are employed, too small a quantity of concrete can be poured at any one time, which delays the construction work, increases its cost and requires excessive use of hand labor.

The present invention is directed at overcoming the above and other difficulties and disadvantages by providing a flexible conduit which can be used for conveying freshly mixed concrete directly from a supply thereof, to the precise position where the concrete is to be poured. The supply source may be a loaded crane hopper.

One object of the invention is to provide a conduit having multiple sections which can be quickly detached and attached for adjusting the length of the conduit.

A further object is to provide a novel flexible conduit construction including a multiple layered structure.

Another object is to provide a novel nozzle useful with a flexible conduit as described.

For further comprehension of the invention, and of the objects and advantages thereof, reference will be had to the following description and accompanying drawings, and to the appended claims in which the various novel features of the invention are more particularly set forth.

In the accompanying drawings forming a material part of this disclosure:

FIG. 1 is a side elevational view of a conduit embodying the invention.

FIGS. 2 and 3 are sectional views on an enlarged scale taken on lines 2 2 and 3 3 of FIG. 1, parts being broken away.

FIG. 4 is an end view of a nozzle on an enlarged scale taken on line 4 4 of FIG. l.

FIG. 5 is a sectional view of a hopper employed in the conduit.

FIG. 6 is a perspective View on a further enlarged scale of the nozzle in an inverted position.

FIG. 7 is a fragmentary perspective view similar to a portion of FIG. 6 showing another nozzle construction.

FIGS. 8 and 9 are side views of the nozzle on a reduced scale showing a cover thereof in two different positions.

FIG. 10 is a fragmentary sectional View on an enlarged scale of the nozzle with cover shown closed.

Referring first to FIGS. 1 6, there is shown the conduit including a plurality of cylindrical tubular sections 22 abutted end-to-end. The sections 22 are alike in construction. Each section 22 has an outer thick covering of tough resilient rubber 24. Partially embedded in the inner side of the rubber layer is a helically wound cord 26 made of nylon, rayon, hempor other cordage. The inner side of the helical cordage 26 is embedded in and covered by a smooth plastic layer 28 made of a ICC silicone plas-tic, polytetralluoroethylene, or the like. This layer 28 is flexible and has the characteristic that it is self-lubricating and provides a substantially frictionless surface to flowing concrete, cement and the like.

At one end of each section 22 is a ring 29 having an annular flange 30 directed away from the free end of the section. This flange denes an annular recess 32 all around the ring which is set into a groove 34 in the rubber layer 24 near the end of section 22. Near the opposite end of each section is another ring 36 set in groove 37. Ring 36 has two or more latch bars 38 pivotally engaged on pintles 39 of eyes 40 carried by the ring 36. Each bar has a hook 42 at its end which engages in the recess 32 of a ilange 30 at the adjacent end of the next section 22; see FIGS. l, 2 and 3.

At the supply or feed end of the conduit 20 is a funnel or hopper section 22a. This section has a tubular portion 22 provided with rubber layer 24a, cordage 26a and plastic lining 28a; see FIG. 5. At the outer end of portion 22 is a latch ring 36. The other end of portion 22' terminates in a funnel or hopper 35. This hopper has a tapering form with flat parallel side walls 39a and an inclined bottom 44, all smoothly converging into the round opening of tubular portion 22. Thus concrete or cement, which may be poured into the hopper 35 from a hopper or other source, will llow down the connected sections 22.

At the distal end of the conduit is a nozzle 5l). This nozzle preferably has an oval mouth 52; see FIGS. 4 and 6. A flange ring 29 is provided at the round end 53 of the nozzle. This arrangement permits the nozzle to be rotated with respect to the adjoining round section 22 without disturbing `that section so that the major axis of the mouth 52 can be oriented in any desired plane. The latch bars 38' which engage the ring 29 of the nozzle must of coursebe disengaged to permit the nozzle to be rotated.

FIG. l shows the conduit 20 supported at its funnel end on a wall W or other suitable support. An intermediate portion of the conduit is supported on another wall or other support W. It will be noted that the conduit llexes and can be bent laterally, upwardly, downwardly or obliquely to feed the concrete from the nozzle in any desired direction and to any desired position.

FIGS. 7-10 show another nozzle construction in which nozzle 50a is provided with an oval ring 29" on its mouth 52'. The flange 3G of ring 29 is directed away from the opening of mouth 52. An eye 60 is provided on ring 29 and pivotally engages a link 62 which in turn is pivotally attached to eye 63 on a circular cover plate 64. The plate 64 has an eye 66 which pivotally retains latch bar 68. The hook 42 of the latch bar engages in the recess 32 dellned by the llange 30 and holds the cover plate tightly over the open end of the mouth 52.

It will be noted that the latch bars 38 and 68 have lingers 41, 41 extending outwardly of the hooked ends of the bars. These fingers can be grasped manually or can be struck with a hammer or other object to loosen the latch bars to drive them into engagement with the flange rings. The flexible walls of the conduit sections and nozzle yield sufficiently to permit the hooks to pass over the outer edges of the llanges as the hooks are engaged and disengaged.

The nozzle 50a can be axially rotated to orient its oval mouth opening in any desired plane to control the shape of the stream of concrete issuing from the nozzle. In addition the flow can be cut off at .any time by applying the cover plate over the opening ofthe nozzle mouth. FIGS. 8 and l0 show the cover 64 in closed positions and FIGS. 7 and 9 show the cover open. Nozzles 50 and 50a have multilayer construction like conduit sections 22.

There has thus been provided a llexible conduit of very tough and durable construction for the purposes intended. It is light in weight. Its several sections can easily be carried to a job location and assembled in any required length. No special tools are required and no particular skill is required for assembly and disassembly. Worn out sections can easily and economically be replaced.

While I have illustrated and described the preferred embodiments of my invention, it is to be understood that I do not limit myself to the precise constructions herein disclosed and that various changes and modifications may be made within the scope of the invention as defined in the appended claims.

Having thus described my invention, what I claim as new, and desire to secure by United States Letters Patent is:

1. A flexible conduit for conveying freshly mixed concrete or the like, comprising a plurality of exible tubular sections, and quickly engageable and disengageable latch means at opposite ends of the sections securing the Sections together in axial alignment, with ends of adjacent sections in abutment, each of the sections having an outer, tough, resilient rubber covering, an inner smooth plastic lining, a spiral cordage embedded in and between abutting sides of the covering and the lining, a nozzle member having a tubular end portion provided with other latch means for detachable engagement with the latch means of one of said sections at one end of the conduit, and a funnel member having a tubular end portion provided with further latch means for detachably engaging with latch means of another one of said tubular sections at the other end of the conduit for feeding concrete thereto, said funnel member having a wide, shallow open end for receiving said concrete from a supply thereof, said nozzle member having a mouth with oval open end, said nozzle member having a round cross section at its other end, whereby said nozzle member can be rotated with respect to the adjacent tubular section to orient the major axis of said oval open end in a selected plane while holding the adjacent tubular section stationary.

2. A flexible conduit for conveying freshly mixed concrete or the like, comprising a plurality of flexible tubular sections, and quickly engageable and disengageable latch means at opposite ends of the sections securing the sections together in axial alignment, with ends of adjacent sections in abutment, each of the sections having an outer, tough, resilient rubber covering, an inner smooth plastic lining, a spiral cordage embedded in and between abutting sides ofthe covering and the lining, a nozzle member having a tubular end portion provided with other latch means for detachable engagement with the latch means of one of said sections at one end of the conduit, and a funnel member having a tubular end portion provided with further latch means for detachably engaging with latch means of another one of said tubular sections at the other end of the conduit for feeding concrete thereto, said funnel member having a wide, shallow open end for receiving said concrete from a supply thereof, said nozzle member having a mouth with open end, and a cover plate hinged to said mouth near said open end, and further latch means on said nozzle member including a hooked latch member for holding said cover closed over the open end of the nozzle mouth.

References Cited in the le of this patent UNITED STATES PATENTS 1,561,448 Simon Nov. 10, 1925 1,812,678 Bernert June 30, 1931 1,946,222 Mandt Feb. 6, 1934 2,142,636 Evensen Jan. 3, 1939 2,748,805 Winstead June 5, 1956 2,888,042 St. John et al. May 26, 1959 3,053,367 Lynch Sept. 11, 1962 FOREIGN PATENTS 887,300 Germany Aug. 20, 1953 1,105,842 France July 6, 1955 

1. A FLEXIBLE CONDUIT FOR CONVEYING FRESHLY MIXED CONCRETE OR THE LIKE, COMPRISING A PLURALITY OF FLEXIBLE TUBULAR SECTIONS, AND QUICKLY ENGAGEABLE AND DISENGAGEABLE LATCH MEANS AT OPPOSITE ENDS OF THE SECTIONS SECURING THE SECTIONS TOGETHER IN AXIAL ALIGNMENT, WITH ENDS OF ADJACENT SECTIONS IN ABUTMENT, EACH OF THE SECTIONS HAVING AN OUTER, TOUGH, RESILIENT RUBBER COVERING, AN INNER SMOOTH PLASTIC LINING, A SPIRAL CORDAGE EMBEDDED IN AND BETWEEN ABUTTING SIDES OF THE COVERING AND THE LINING, A NOZZLE MEMBER HAVING A TUBULAR END PORTION PROVIDED WITH OTHER LATCH MEANS FOR DETACHABLE ENGAGEMENT WITH THE LATCH MEANS OF ONE OF SAID SECTIONS AT ONE END OF THE CONDUIT, AND A FUNNEL MEMBER HAVING A TUBULAR END PORTION PROVIDED WITH FURTHER LATCH MEANS FOR DETACHABLY ENGAGING WITH LATCH MEANS OF ANOTHER ONE OF SAID TUBULAR SECTIONS AT THE OTHER END OF THE CONDUIT FOR FEEDING CONCRETE THERETO, SAID FUNNEL MEMBER HAVING A WIDE, SHALLOW OPEN END FOR RECEIVING SAID CONCRETE FROM A SUPPLY THEREOF, SAID NOZZLE MEMBER HAVING A MOUTH WITH OVAL OPEN END, SAID NOZZLE MEMBER HAVING A ROUND CROSS SECTION AT ITS OTHER END, WHEREBY SAID NOZZLE MEMBER CAN BE ROTATED WITH RESPECT TO THE ADJACENT TUBULAR SECTION TO ORIENT THE MAJOR AXIS OF SAID OVAL OPEN END IN A SELECTED PLANE WHILE HOLDING THE ADJACENT TUBULAR SECTION STATIONARY. 